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Finding the Fourth Proportional to 93.73, 140.60 and 79.42

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Solution

The fourth proportional to 93.73, 140.60 and 79.42 is: 119.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.73 : 140.60 = 79.42 : x
  2. Step 2: Convert to fraction form
    93.73/140.60 = 79.42/x
  3. Step 3: Cross multiply
    93.73x = 140.60 × 79.42
  4. Step 4: Simplify right side
    93.73x = 11,166.45
  5. Step 5: Solve for x
    x = 11,166.45/93.73
  6. Step 6: Final answer
    x = 119.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.